You can get those social-media icons to appear automatically in the sidebar by following these steps:

– Make sure the Jetpack plugin is active and connected to your WordPress.com account (I see you’re already running it, so you’ve already got this part taken care of!)
– In the Jetpack settings area, activate the Publicize module
– Under Settings > Sharing, connect to your preferred social network(s)
– Under Appearance > Customize, in the Connect panel, select the appropriate social-media accounts and save your settings.
– The social-media icons for the accounts you’ve selected should now appear in your sidebar, and your posts will automatically be shared with those networks on publication. If you prefer not to have them publicized automatically, return to Settings > Sharing, and disconnect your account(s). The icons will still remain in your sidebar.

Ben – as Jan said, all of Jetpack’s capabilities are already built into WordPress.com, so there’s nothing for you to install. 🙂

If you’re looking to add social-media buttons to Writr on WordPress.com, the steps are the same as the ones I provided above, except you can skip the first two – just start with “Under Settings > Sharing, connect to your preferred social network(s)” and go from there.

Thank you for your help in creating the social media buttons. I do however have one issue. My fb button goes to my personal Facebook page. I want to redirect it to my blog page. This is a created page, not my personal profile. How do I do that? Thanks!

Faithreboot – you can always disconnect your personal Facebook page from your Jetpack sharing settings and then reconnect it to a different Facebook page if you prefer. You’ll then need to reselect the new Facebook account in the Customizer.

Following on from this question, how do I add a pinterest button when doing it this way? I thought it was there but it’s actually the path button. I managed add Facebook and twitter using jetpack on wordpress.org